Property and Equipment (Tables)

12 Months Ended

Jul. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of property and equipment

Property and equipment consisted of the following at the dates indicated:

	Life in	July 31,
(Dollars in millions)	Years	2017			2016
Equipment	3-5	$	579		$	533
Computer software	3-6	749			619
Furniture and fixtures	5	82			73
Leasehold improvements	2-16	310			296
Land	NA	81			60
Buildings	5-30	547			403
Capital in progress	NA	71			256
		2,419			2,240
Less accumulated depreciation and amortization		(1,389		)	(1,209		)
Total property and equipment, net		$	1,030		$	1,031

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NA = Not Applicable